Ionic Liquids Based on Oxidoperoxido-Molybdenum(VI) Complexes with a Chelating Picolinate Ligand for Catalytic Epoxidation
| Autor: | Ana Soraia Mendo, Luis Cabrita, Željko Petrovski, Margarida M. Antunes, Anabela A. Valente, Isabel S. Gonçalves, Luís C. Branco |
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| Přispěvatelé: | DQ - Departamento de Química, LAQV@REQUIMTE |
| Rok vydání: | 2020 |
| Předmět: |
endocrine system
Ionic bonding 010402 general chemistry Electrochemistry 01 natural sciences Medicinal chemistry Catalysis lcsh:Chemistry chemistry.chemical_compound picolinate epoxidation Chelation General Environmental Science catalysis 010405 organic chemistry Ligand Chemistry ionic liquid complexes oxidoperoxidomolybdenum biochemical phenomena metabolism and nutrition 0104 chemical sciences lcsh:QD1-999 Ionic liquid General Earth and Planetary Sciences Differential pulse voltammetry Cyclic voltammetry |
| Zdroj: | Reactions Volume 1 Issue 2 Pages 12-161 Reactions, Vol 1, Iss 12, Pp 147-161 (2020) |
| ISSN: | 2624-781X |
| Popis: | Ionic oxidoperoxido-molybdenum(VI) complexes of the type [Cat][MoO(O2)2(pic)], with pic = N,O-chelated picolinate ligand and Cat = monocation, were prepared in high yields (82&ndash 95%) from the precursor complex [H3O][MoO(O2)2(pic)] via [H]+ cation exchange for 1-ethyl-3-methylimidazolium [EMIM]+, 1-butyl-3-methylimidazolium [BMIM]+, 1-octyl-3-methylimidazolium [OMIM]+, N-cetylpyridinium [C16Py]+, and N-methyl-N,N,N-trioctylammonium [Aliquat]+. The structure and purity of the ionic compounds were assessed by 1H and 13C NMR, FT-IR, and elemental analysis (C, H, N), and the electrochemical properties were studied by differential pulse voltammetry (DPV) and cyclic voltammetry (CV). The [Cat][MoO(O2)2(pic)] compounds showed promising catalytic epoxidation activity based on the model reaction of cis-cyclooctene with tert-butyl hydroperoxide as oxidant. The type of cation influenced the physical state of the compound and the catalytic performance. |
| Databáze: | OpenAIRE |
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